jerky movement in loader

   / jerky movement in loader #1  

JeffJ

New member
Joined
Jan 31, 2005
Messages
20
I have a BX23. After cutting in a new driveway I now notice that the loader has a jerky movement when raising. Also when tilting the bucket back. It goes down and dumps bucket smooth. I have greased all the fittings with Moly-EP lithium grease. The Backhoe appears to work fine. Has anyone else had this problem? I was not sure if maybe there is a clog in hydraulic line...It lifts to full height just with a jerky motion. I have seen no hydraulic leaks.
 
   / jerky movement in loader #2  
Do you have your rpm high enough? Have you allowed time for the fluid to warm up? Just a couple of things I could think of that might cause this. Of course neither explains why you have not seen this with the BH. /forums/images/graemlins/confused.gif
 
   / jerky movement in loader
  • Thread Starter
#3  
Yes the RPM is high enough. Also this happens even after I have been running for over an hour. I will use the backhoe more tonight just to make sure I am not seeing the problem there. I used it for 4-5 minutes to test it. Can a filter somewhere be clogged causing this? Or is it possable the loader was damaged/bent while scraping dirt? If this happened though I would think that it would be jerky going down to.
 
   / jerky movement in loader #4  
Is the 3PH lever centered?
Have you tried disconnecting and reconnecting the hydraulic lines to the loader?
 
   / jerky movement in loader #5  
   / jerky movement in loader #6  
I had the same problem with a jerky dump and I fixed it by using Kubota Super UDT oil.

When it came time for my 300 hr service (B7500) my dealer convinced me to use a different oil that he swears by. He would have to order the Kubota S-UDT so I used what he suggested. Big mistake!! I noticed a jerking in my bucket motion and I assumed it was the recently changed Hyd oil since it worked fine before the change. Well, I got ahold of the S-UDT and changed it with new filters. It worked. Smooth operation again. I won't do that again.....S-UDT for my baby from now on, regardless of the cost!!
 

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